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A kind of substrate and its preparation method, display panel

A substrate and mask technology, applied in semiconductor devices, electrical components, circuits, etc., can solve the problem of uneven display

Active Publication Date: 2021-02-02
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are also corresponding problems in inkjet printing. Specifically, in order to define the sub-pixel area, it is necessary to make a pixel defining layer before inkjet printing, so that ink droplets of organic materials can smoothly enter the grooves in the sub-pixel area.
However, there is a requirement for the dam of the pixel-defining layer. During inkjet printing, the liquid repellency of the dam is required to facilitate the ink droplets and scattered ink droplets splashed to flow into the groove smoothly without leaving ink on the dam. In the drying process, it is necessary to prevent the ink droplets from climbing along the dams on both sides to form a coffee ring phenomenon with thick edges and thin middle, resulting in uneven display

Method used

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  • A kind of substrate and its preparation method, display panel
  • A kind of substrate and its preparation method, display panel
  • A kind of substrate and its preparation method, display panel

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] An embodiment of the present invention provides a substrate, such as figure 1 As shown, it includes a substrate 10, a pixel defining layer 30 disposed on the substrate 10, the pixel defining layer 30 includes a dam 301, and several micron-scale protrusions 302 arranged on the upper surface and side surfaces of the dam 301; the protrusion 302 has lyophobic properties.

[0032] In the present invention, numerous tiny protrusions 302 with lyophobic proper...

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Abstract

Embodiments of the present invention provide a substrate, a preparation method thereof, and a display panel, which relate to the field of display technology, and can evenly spread ink droplets in grooves defined by a pixel defining layer, thereby effectively improving product quality and display effect. The substrate includes a substrate, a pixel defining layer arranged on the substrate, the pixel defining layer includes a dam, and several micron-scale protrusions arranged on the upper surface and side surfaces of the dam; the protrusion has Lyophobic properties.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a substrate, a preparation method thereof, and a display panel. Background technique [0002] Organic Light Emitting Diode (OLED) display has better contrast ratio, higher brightness, wider viewing angle, wide color gamut and faster refresh rate, and is characterized by its low power consumption and flexible display It is recognized as the next generation display technology. [0003] At present, the organic material functional layer of the OLED display is prepared by vacuum thermal evaporation process, that is, the organic material is heated in a vacuum chamber to sublimate or melt and gasify into a vapor, which is deposited on the substrate through the openings of the metal mask. However, due to the high cost of vacuum thermal evaporation and the difficulty of producing large-scale and fine metal masks, the evaporation process cannot be applied to large-scale substrates. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H10K99/00
CPCH10K59/122H10K59/1201H10K71/135H10K59/805H10K50/805H10K71/00
Inventor 余世荣孟庆勇吴春晖
Owner BOE TECH GRP CO LTD
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